Text wrapping method

gistfile1.rb

  def wrap_text(text, width, indent_width)
    raise ArgumentError.new("Width must be at least 1 character wide.") if width <= 1
    raise ArgumentError.new("Wrapping width must be greater than the indent amount.") if width <= indent_width

    width -= indent_width

    lines = []

    curline = nil
    text.split.each do |word|
      if (curline == nil)
        # start a new line
        curline = ""
        curline << word << " "
      elsif (curline.length + word.length <= width)
        # add the word to the line we're building
        curline << word << " "
      else
        lines << curline
        curline = nil
        redo
      end
    
    end
    lines << curline if curline
    lines.join("\n")
  end